Cut a piece of wood to desired size for the sign.
Apply spray paint to the piece of wood cut in the previous step.
Cut pieces of paper as desired for the banner, then use hot glue to attach to a piece of string.
Cut pieces of wood to size for the outside frame of the sign. Attach the frame pieces using a brad nailer.
Use the glue gun to attach the banner pieces on the inside of the frame.
Use scissors to trim the excess string.